Steering Arms

Hello
I have a pair of through bolt style steering arms on my 37 spindles.
On the bottom they are marked American Hot Rod Parts.
They have been cleaned up for painting by previous owner so there is no visible spine to tell if they are cast or forged ? They do ring if you tap them but not a higher pitch as I thought forged would.
To look at they are identical to the so-cal arms.
As I have no proof they are quality parts I have to submit them for testing….If they are cast I won’t bother testing and buy new quality ones.
Any comments would be appreciated.
Neddo

 

So Cal parts.

Quality

 

Thankyou for the reply.
I’ve learnt something.

 

Once I have the ok for pics I can post one

 

Here's a link . . .

Steering arms (est1946.com)